Ventilating system for buildings.



A. M. BERGLUND.

- VENTILATING SYSTEM FOR BUILDINGS.

APPLICATION FILED JUNE'B, 1912.

Patented Feb.11,1913.

2 'SHEETS-SHEET 1.

A. M. BERGLUND.

VENTILATING SYSTEM FOR BUILDINGS.

APPLICATION FILED JUNBB, 1912.

Patented Feb.11,1913.

2 SHEETS-SHEET 2.

sufran s'rArns AUGUST IVI. BERGLUND,

PATENT FFICE.

'0F OMAHA, NEBRASKA.

VENTI-[LATING SYSTEM FOR BUILDINGS.

f Specification of Letters Patent.

'Patented Feb. 11,1913.

Application. filed .Tune 8, 1912. Serial No. 702,426.

T 0 all whom t may concern.

Be it known that I, AUGUST MQBERGLUND,

a citizen of the United States, residing at e Omaha, in the county of Douglas and State rl`he invention consists'of the novel con.

'rnction, combination and arrangement of parts as described herein and claimed, and as illustrated in the drawings, wherein..-

Figure 1 is a sectional view, partly broken, showing 'the elevator shaft, an elevator therein, and an arrangement of horizontal tlnes or air passageways communicating 'with the shaft and with the rooms of a building. Figs. 2 to S inclusive, are detail views showing devices for automatically opening or closing the air passageways by the movement of the elevato-r. Fig. is a side view of an apertnred disk. Fig. is a face view of a circular depression, recess or disk-seat formed in the wall'of the shaft. Figs. 4: and 5 show different positions of the disk when pivotally mounted in the recesses. Fig. 6 is a sectional view,on line (3 (3 of Fig. 5, a part of-a side wall of the elevator being added. Fig. 7 is an enlarged detail showing the operating-lug for engaging the disks, a part of the side wall of the elevator cage being shown `in section. Fig. S is a broken view showing a part of the upper end of the elevator with rollers bearing upon the vertical walls of the elevatorl shaft, said walls being in section to show a recess withl a disk mounted therein, and toillustrate relativepositions of an operating-lug and one of the cavities of a disk.

Referring now to tln drawing fora more particular description,l numerals 1 indicate the sever'al floors, and 2 the roof of a building, these parts being traversed by the elevator shaft 3. Communicating with the interio.n of the elevator shaftv and with each room 4 are comparatively short conducting pipes, flues or air .passageways 5 and 6, arranged in pairs, each being provided with a valve 7. lassageways 5 are preferably located near the floors for the movement therethrough of foul air from the rooms, .and t-he valves therefor are arranged to permit air to pass from the rooms to the shaft, but not to pass reversely. Passageways 6 are located nearv the ceilings o`f the rooms for a movement, to the rooms, of fresh a-ir.

Their valves allow air to move from the shaft into the rooms, but movementof the air.

v At@ are .indicated doors, and they may have any convenient mounting, one above the other, in the walls of the shaft. In two vertical walls of the shaft, opposite t-o each other, are formed circular depressions, recesses or disk-seats 9, and a passageway 5 and 6 open thereon. A disk 10 is disposed in each circular depression 9, with its face prevent 21. FQVQISG or front side flush with the wall of the shaft; and each of the disks is pivotally mounted, as indicated at 11, at the middle of a depression, said pivotal ,mounting being midway between passageways 5 and 6 Each disk is formed with apertures 12 and 13, and ,has a segmental portion 14 out away to form, near its periphery, the radial stops 'or shoulders 1-5 and 16; and if the disks are partly rotated, stops 15 and 16 may engage .the stationary lug 1T, said lug being mounted in and n ear the circular wall of a depres- -sion 9, and thereby the movements of theA v disks will be limited to a rotatable movement in an are of substantially 60 degrees.

At 18 is indicated the lift or elevator. It Vmay' be supported and `moved vertically in the shaft by any ,suitable means, its top and bottom being adapted to fit within the shaft in a manner to cause the air, or the greater part of it, to move in the shaft in the same direction vas the movement of the elevator, and for this purpose the top and bottom of the cage are covered with imperforate layers n 19 of suitable material, and rollers 20 are mounted thereon in a manner to engage the vertical walls of the elevator shaft. The operation of the rollers tends to prevent vibration of the cage while moving in the shaft, and the layers 19 prevent amovement of air through'the elevator or cage, and canse the cage to operate 1n a manner analogous -to the piston of a pump,

the air in the shaft above or below the endsv of the cage being either forced ordrawn, according to the direction of movement of the elevator.

Each disk is providedfwith .a radial pro-,r

jection or lug 21, and each lug is formed at its sides with engaging cavities 22 and 23,

these cavities being disposed, preferably, at'

]ect outwardly of said walls and to bear -upon the walls of the elevator shaft, and, during thev movements of the elevator tov engage lugs 21 of the disks.

r1`he pivotal mountings 11 of thedisks are disposed in vertical alinement. Since the 'elevator moves vertically, operating-lugs 24 will move in adjacent vertical planes, these planes being coincident, respectively, with the planes in which are disposed lugs 21 of disks; and therefore, in operation, when the elevator moves upward or downward, lugs 24 will slide upon the walls of the shaft, springs 25 being compressed. By the force of their springs theselugs will engage lugs 21 of the disks, and will cause the disks to be partly rotated, the limit of said rotatable movement being in an arc between shoulders or stops 15 and 16 of the disks. After the lug 21 of a disk is engaged by a lug 24 of the moving elevator, said lug 21 will slide during the movement of the disk intoone of the cavities 22 or 23, and undue vibration of the disk will be prevented.

' At 2G is indicated a chamber for containing fresh orpure air, the supply coming from any suitable source.

At 27 upon the VroofY of the building is indicated a flue or intake chamber gfor the elevator shaft, this chamber havingronducting pipe 28 communicating with chamber 26, and provided with a valve 29 which permits a movement of the air into the shaft, but prevents a reverse movement.

A pipe for discharging' foul air is indicated at 30. It has a port d communicating` with the lower end .of the shaft, and is pro vided with valve 31, and through this pipe air may pass outward fromthe building, a reverse movement being prevented by operation of the valve.

In operation, when the elevator moves upward, the air above'the cage'will be forced from the shaft through passageways (S, and since lugs 24 Will engage cavities 23, the disks will be rotated in a` manner to cause their apertures 12 to register with passage ways 5, said disks causing the closure of pas- 1 sageways 6; and by reason of suction during this? movement of the elevator, air will be drawn from the rooms into the 'shaft through passageways 5 at all points below the moving cage. Each ascent of the eleva- `tor therefore causes a `movement of the air above2K it to pass into the rooms through passageways 6, and causes foul air to be drawn into the shaft at points below it; and automatically closes passageways 6, so that, during a descending movement, the foul air may not move from the shaft into the rooms. Then the elevator moves downward, all of the passageways 6 below the cage having been closed by the disks as above described, the foul air will not enter the rooms therethrough, but will be forced downwardly and will be discharged through pipe 30. During this descending movement, lugs 24 of the elevator will engage within cavities 22 and will cause a part rotation of the disks, apertures 13 of said disks registering with passageways G. Also, as is obvious, during the descendingmovement of the elevator, air will be drawn into the upper part of the shaft through the port a of chamber 27, the supply coming from chamber 26, through pipe 28. It will thus be seen that acontrol is made so that7 by the movements of elevators, fresh air may be vsupplied to the rooms of a building, and foul air may be with-v drawn therefrom, and the air thus supplied may, of course, be heated air or that which has been refrigerated. Only a slight force is required, and since the operation. is automatic, the practice of the improvement, as described, is comparatively inexpensive.

As shown in Fig. 1, pipes 6 may be formed to advantage with discharge terminals or branches b and c, to cause af more uniform distribution or circulation of air in the rooms.

It will be understood that the ports a and d at the terminals of the shaft operate, respectively, as intake and discharge ports for said shaft, and that the air-passageways 5 and (i which form the communications be?. tween the shaft and each of the rooms operate, respectively, as intake air-passageways and exit air-passageways for the shaft.

While the upright shaft must be tubular and substantially air-tight inl order that the cage to be reciprocated therein may cause a movement of the air in advance and rearwardly of the moving cage, this construction will not prevent the provision and use of doors 8, and the doors may be opened and closed during operation since rollers 20 and the ends of the cage make, substantially, a closure of the transverse area of the shaft, both belowl and above the cage, at the time the doors are ordinarily opened and closed.

Having fully described my invention, whatV I claim as new and desire tosecure by Letters Patent is,-

1. A Ventilating system for the rooms of a building, comprising', in combination with an upright tubular shaft having at one of its terminals an intake port with a valve, its opposite end havin a discharge port with a valve, said sha` v eingv provided between said'ports to communicate with each roomv with an exit air-passageway and an intake tur-passageway; an elevator disposed for longitudinal. reciprocation within and provided withA layers at its ends for obstructing the transverse area of said shaft; rollers ada ted to bear upon the walls of the shaft whi e mounted'upon the ends of the eleval tor; coperating means upon said shaft and elevator whereby the upward movement of the elevator will causela movement of air.-

from that part of the shaft above 'the elevator through saidfe'xit air-passageways, the

air moving through'said intake air-passagewaysito that part of the shaft below'thev Within and provided with layers' at it-s'ends` for obstructing the transverse area ofsaid shaft; rollers adapted to bear upon the walls of the shaft while mounted upon the ends of the elevator; coperatingy means upon said shaft and elevator whereby the upward movement of the elevator will cause a movement of air from that part vof the shaft above the elevator through. said exit air-passageway@ the air moving through said intake air-passageways into that part of the shaft. below the elevator, the downward movement of the elevator causing a movement through said terminal discharge port of air Within the shaft below the elevator, the air moving into the shaft above the elevator through -said terminal intake port.

3. A Ventilating system for the rooms ofv buildings, comprising, in combination with an upright tubular shaft having -terminal intake and discharge ports with valves, said shaft being provided between said terminal ports to communicate with each room with an exit air-passageway vand an intake airpssageway; an elevator disposed for lon- 'tudinal reciprocation within and having A its ends lprovided with imporforate layers.; l cooperating means upon said shaft and elevator whereby the movement of said elevatozzin one direction will cause a movement fair from that part of the shaft in advance of the elevator through said exit air-passageways, the air moving through sai(A intake air-passageways into that part of the shaft rearwardly of said elevator.

' 4. A Ventilatingsystem for a building v having a plurality of rooms, comprising, in combination with an upright sha-ft having terminal intake and discharge ports with valves, said shaft being provided between said terminal ports lto `communicate with each room with an exit air-passageway arid an'intake air-passageway; an elevator disposed for longitudinal reciprocation within 4and having ends provided with imperforate layers; coperating means upon said shaft and elevator whereby the movement of said elevatonin one direction will cause a moveifint of air from that part of the shaft in advance of the elevator through said exit. air-passageways, the air moving through said intake air-passageways into that part of the shaft rearwardly of said elevator,

the movement of the elevator in the opposite direction causing a movement of air from t-he shaft through a terminal discharge port, anda movement 'of air within vthe shaft through a terminal intake port.

5. A Ventilating system for the rooms of a building, comprising, in combination 'witha tubular shaft having terminal ports with valves, and having between said terminal ports in communication with each of said .rooms exit air-passageways and intake airpassageways; an elevator disposed within the shaft for movements longitudinally,

thereof and provided with imperforate ends; devices supported'by the walls ofthe shaft and operated by the movements of the ele` vator whereby during a movement of the elevator in one direction air may be. moved from one part of the shaftthrough the exit ,air-passageways, air moving into another part of the shaft through the intake airpassageways.

In testimony whereof vI have affixed my signature in presence of two witnesses.

I y AUGUST M. BERGLUND. l Witnesses:

,.HIRAM A. STURGES,

A. F. CLARK.

Copies of this patent may be 4obtained for v-e cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

